InterviewSolution
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InterviewSolution
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When hydrochloric acid is added to cobalt nitrate solution at room temperature, the following reaction takes place and the reaction mixture becomes blue. On cooling the mixture it becomes pink. On the basis of this information mark the correct answer. `{:([Co(H_(2)O)_(6)]^(3+)(aq)+4Cl^(-)(aq)hArr[CoCl_(4)]^(2-)(aq)+6H_(2)O(l)),(" (pink)" " " "(blue)"):}`A. `Delta H gt 0` for the reactionB. `Delta lt 0` for the reactionC. `Delta H = 0` for the reactionD. The sign of `DeltaH` cannot be predicted on the basis of this information. |
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Answer» Correct Answer - A On cooling , the equilibrium shifts backward or on heating , the equilibrium shifts forward. Hence, reaction is endothermic, i.e., `Delta H gt 0`. |
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